With a Kotlin 1.1 (Gradle) project there are some deprecated messages that keep on appearing even though the JVM target is set to 1.8. See messages like the following: Call to static methods in Java interfaces are deprecated in JVM target 1.6. Recompile with … . Have the following in the build.gradle file to set the JVM target:

And when I compile from the command line (mvn clean package) I get no warnings (works perfectly). But when I compile from inside IntelliJ IDEA I get the above warning. Here are my Kotlin compiler plugin settings. Neither the Target JVM Version of 1.8 nor the -jvm-target 1.8 additional command line parameter seem to have any effect: